SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_searchs (searchhash,postids,showposts,sortby,sortorder,searchtime,userid,ipaddress) VALUES ('cfcbfa0ea7310693bccbd89c35c028e1',',1502,1509','1','lastpost','desc','1715071013','0','3.141.29.145')
mysql error: Field 'searchstring' doesn't have a default value
mysql error number: 1364
mysql version: 10.3.39-MariaDB-1:10.3.39+maria~ubu2004
php version: 5.2.17
Date: 07.05.2024 @ 10:36
Script: /search.php?action=user&userid=59&sid=42781c5f267039ea19b32808e9c1c769
Referer: